The only thing you didn't mention was a new oil filter cartridge and of all the oil changes that really need a new filter, your first change is it. There will be a wealth of metal chips on your pump inlet screen (under the little casting that's held in place by two small hex head bolts) and in your old oil filter cartridge.
The Motul is fine if it is the kind that is made for motorcycles. Do not use automobile oil.
You don't want to use any thread locking compound/material on any of the fasteners.
They don't need it and using it will make it very hard to do the next oil change.
Do not try to change the O-rings on the bottom pump screen cover or on the filter cap.
If you are careful and clean off the areas they seal against and then lightly lubricate them when you reinstall the parts the O-rings can be used for years.
When reinstalling the hex bolts that hold the covers, work back and forth between them gently working the O-rings back in place. This isn't so important on the oil pickup screen cover but it is necessary to get the bore sealing ring on the filter cover to gently work itself back into the bore.
Generally I don't like to mix different brands of oil. The detergents may not be totally compatable. If it is an emergency situation where you
must add some oil then any potential conflict between the oils is over-ruled by the need for some added oil.
Those little 8mm(?) hex head bolts are real easy to break off. They only need to be torqued to 4 ft/lbs to do their job.
The big hex drain plug should be torqued to about 15 ft/lbs of torque.
This will seem to be too little but it will do the job and it won't strip out the threads.
Have fun.